Patch "MIPS: Lantiq: Keep ethernet enabled during boot" has been added to the 4.4-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    MIPS: Lantiq: Keep ethernet enabled during boot

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     mips-lantiq-keep-ethernet-enabled-during-boot.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 774f0c6419bb8f9d83901d33582c7fe3ba6a6cb3 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@nbd.name>
Date: Thu, 19 Jan 2017 14:20:09 +0100
Subject: MIPS: Lantiq: Keep ethernet enabled during boot

From: Felix Fietkau <nbd@nbd.name>

commit 774f0c6419bb8f9d83901d33582c7fe3ba6a6cb3 upstream.

Disabling ethernet during reboot (only to enable it again when the
ethernet driver attaches) can put the chip into a faulty state where it
corrupts the header of all incoming packets.

This happens if packets arrive during the time window where the core is
disabled, and it can be easily reproduced by rebooting while sending a
flood ping to the broadcast address.

Fixes: 95135bfa7ead ("MIPS: Lantiq: Deactivate most of the devices by default")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: John Crispin <john@phrozen.org>
Cc: hauke.mehrtens@lantiq.com
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15078/
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/mips/lantiq/xway/sysctrl.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/arch/mips/lantiq/xway/sysctrl.c
+++ b/arch/mips/lantiq/xway/sysctrl.c
@@ -545,7 +545,7 @@ void __init ltq_soc_init(void)
 		clkdev_add_pmu("1a800000.pcie", "msi", 1, 1, PMU1_PCIE2_MSI);
 		clkdev_add_pmu("1a800000.pcie", "pdi", 1, 1, PMU1_PCIE2_PDI);
 		clkdev_add_pmu("1a800000.pcie", "ctl", 1, 1, PMU1_PCIE2_CTL);
-		clkdev_add_pmu("1e108000.eth", NULL, 1, 0, PMU_SWITCH | PMU_PPE_DP);
+		clkdev_add_pmu("1e108000.eth", NULL, 0, 0, PMU_SWITCH | PMU_PPE_DP);
 		clkdev_add_pmu("1da00000.usif", "NULL", 1, 0, PMU_USIF);
 		clkdev_add_pmu("1e103100.deu", NULL, 1, 0, PMU_DEU);
 	} else if (of_machine_is_compatible("lantiq,ar10")) {
@@ -553,7 +553,7 @@ void __init ltq_soc_init(void)
 				  ltq_ar10_fpi_hz(), ltq_ar10_pp32_hz());
 		clkdev_add_pmu("1e101000.usb", "ctl", 1, 0, PMU_USB0);
 		clkdev_add_pmu("1e106000.usb", "ctl", 1, 0, PMU_USB1);
-		clkdev_add_pmu("1e108000.eth", NULL, 1, 0, PMU_SWITCH |
+		clkdev_add_pmu("1e108000.eth", NULL, 0, 0, PMU_SWITCH |
 			       PMU_PPE_DP | PMU_PPE_TC);
 		clkdev_add_pmu("1da00000.usif", "NULL", 1, 0, PMU_USIF);
 		clkdev_add_pmu("1f203000.rcu", "gphy", 1, 0, PMU_GPHY);
@@ -575,11 +575,11 @@ void __init ltq_soc_init(void)
 		clkdev_add_pmu(NULL, "ahb", 1, 0, PMU_AHBM | PMU_AHBS);
 
 		clkdev_add_pmu("1da00000.usif", "NULL", 1, 0, PMU_USIF);
-		clkdev_add_pmu("1e108000.eth", NULL, 1, 0,
+		clkdev_add_pmu("1e108000.eth", NULL, 0, 0,
 				PMU_SWITCH | PMU_PPE_DPLUS | PMU_PPE_DPLUM |
 				PMU_PPE_EMA | PMU_PPE_TC | PMU_PPE_SLL01 |
 				PMU_PPE_QSB | PMU_PPE_TOP);
-		clkdev_add_pmu("1f203000.rcu", "gphy", 1, 0, PMU_GPHY);
+		clkdev_add_pmu("1f203000.rcu", "gphy", 0, 0, PMU_GPHY);
 		clkdev_add_pmu("1e103000.sdio", NULL, 1, 0, PMU_SDIO);
 		clkdev_add_pmu("1e103100.deu", NULL, 1, 0, PMU_DEU);
 		clkdev_add_pmu("1e116000.mei", "dfe", 1, 0, PMU_DFE);


Patches currently in stable-queue which might be from nbd@nbd.name are

queue-4.4/mips-lantiq-keep-ethernet-enabled-during-boot.patch